{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe75804b8c3f20b38e1584c132cce6105e91dda152519037725ed23643a2f1277",
    "signature": "0x2fa2be033f024889b93a427985f59ad3996ec599ecd7fa9feb17a257191afa4b4367815c3bf329a3e00169360522ef87ee5cdfb254ebb0ae53f5a735618130951b",
    "signer": "0x19ef6E9dD868c3BcB9b5cab88E7D09219656577e",
    "userId": "711215535"
  }
}