{
  "manageEntity": {
    "action": "Save",
    "entityId": "1269586208",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe96e6a1d519c8d117cac17b16555d7e42ab474ed167fd7711999cac1cca45d7b",
    "signature": "0xd2f21d5991720a89b70b50bd7eaae91a49de6eac82e54781046109a2b0780867641c25ef547925ee6306942f8d65eff87764b95458f0c19bc408ffad4bcfa4a11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}