{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31ddf3d821d1519da10c4db866388a572831f0ea77b086d9ac0bd8236d1e43b1",
    "signature": "0x4c9fa73b01a842d7747901b4f019dee237ed3fcc4fb5ac5aac889c1280e7db445c28d8c00c553a66eeb9c5b40df1ce05d29e119c1db4c87d0060f952ed4f7d111c",
    "signer": "0xdCd3Dd7109F06BBc080AcdBD6B54bBae80AD4980",
    "userId": "455403640"
  }
}