{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5bf083b25349f00f2d5397800cdefb1395e3a9472a8472c2f34546d3338b2866",
    "signature": "0x425535a8ecdda0016071caa4d7d3256bf1b586ff861a4b81a8c9267d3f12292a296b7bc6a13bff15acaf3f3ea5108fd2abd49966477714c1116012258d9252b71b",
    "signer": "0x6Ee7842A432b779E1Bf51F27B824fe86161cee6c",
    "userId": "408407824"
  }
}