{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213575596",
    "entityType": "User",
    "nonce": "0x2b7ee9cd47faad9c5f0be0778658126c01dc7a69fe74557a2a0d71b7366db10f",
    "signature": "0xd917a992d7c606e2143f01832d4c150ffbc3bfdeafee16983aabf4225d41d7fe5a33438c4375b66e68efeac4cc06d3049acb2b6355805a8c189f68abefdbca9a1b",
    "signer": "0x9db84b5af18534d8Ee180c90E1377f813B5Ec313",
    "userId": "741417198"
  }
}