{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122578",
    "entityType": "User",
    "nonce": "0x7d54e2b7073238caa0afce780714499b76293cf10cb2a313ae0b90fbe7d15466",
    "signature": "0xfb85679d033bc00aa33867669b6c460464ec909f847ac40fd974e5d1799c8c2c525d63a3487f3f73da2a130bfb16142cf79e1a9aa330eedfc61520d342145d261c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}