{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57937",
    "entityType": "User",
    "nonce": "0xb5d1f9dc8f5760ff62990aef1779779a247bbfb1e992612087599fa21d77521d",
    "signature": "0xe279320d6a632c50ed624a6a7cdafe4a11829baa01ffda243574e994fd3de8bc739d8e941f9fd93d77a18201117693bbd5fd3cb0decba7a6b224b5bd9ea92ad81c",
    "signer": "0xe3921B88207E6D5BF6f86f1245645Cf17A2BE8c4",
    "userId": "472933117"
  }
}