{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7892933d7cfdcf46036a89d88fe0c781c1dc1f3a2b299fa13fe9db64b4d8e015",
    "signature": "0xb9838a1a407fa8ebe6e6681b8f75b16be74aa169a99d5581e1c0d9529c09948e244693751c6e3772637275625733fec1ef96861ad120619357841225302ed3b81b",
    "signer": "0x750d73e4c4cF6221A678C12A353812D356Ce568A",
    "userId": "841855424"
  }
}