{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb006641416271613cf3a7ab880a840048b4390f912814c803d7f31c86ace7226",
    "signature": "0x05d9af1c9e3cc079d4e66d100464ebfaece8f829028dda726182d42ae20224803f91d751b3e2d5dae3bda6708d55d2c9113f022af86d8bfeafb56032c526c19f1c",
    "signer": "0x7433EF98d41FA8dAa715B6AAB0F4d3225927B98f",
    "userId": "875379357"
  }
}