{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdd492bd3379da2f9855d58da82264daf275d9992b8e65991e3e5b9604605383a",
    "signature": "0x9c0c521c0809aae03d51b096b033a750c3d9bed476a5d0320877cf072abf441b1c40241b14cf8cedb6cdb657c025ccb02ebc432e7c7bbf9a2261c3410e2a49ca1c",
    "signer": "0xbC6F2a03a7eF7517ed79dEA4d42b300BBa79f793",
    "userId": "515207100"
  }
}