{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f69a832ff2b4d279aff7fdd692ae9f72e1cdaa4703a7076a66aceed6373bf61",
    "signature": "0x15e44d1251a72a0dcc9d2c8e1fd33f13e5d5b2310fc9a53f151b8cc0f17bfda231b77104147d08325709e1e7beda67960eb774c338b5782c438b947891ff51751c",
    "signer": "0x67bB6F387F0D1D3226E8C821d4e976239bD4C7E5",
    "userId": "305597863"
  }
}