{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499895630",
    "entityType": "User",
    "nonce": "0xf30f0d19b5e643b7a458bd0d14cb361299d21958d8848617fe8b46e84d4d4b4a",
    "signature": "0x0e6a35d161346069cfa5c8e78a2af1e3a5751d2cda207bab22e14dd832c11f0634591408c306a1e9c8be1a53d7ab333650bca76f2f4bece674dbcb6fec932af71c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}