{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f723620560b028f78dcd4670cb1bfa9d9fc604e40b4c8d09d24546f9b95c827",
    "signature": "0xae57de61aac754303e4020df64b4ac09b543837c041e4794c9aead6bf66f02b2714be0942579224d51319a9897bcbd30a496be48564f0adf6860b75ad35b28441b",
    "signer": "0x223BBa9Ec75790C9B54191281b4A2312c2Ec494A",
    "userId": "733707722"
  }
}