{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x702e44403233e4beb28e4d85609b7882c69913367a720da6e2ec284ecb7656ed",
    "signature": "0x13888daa61ababfc3aee5e8ec83f49edf8503af21516fda07fbd59c3aeef00612c503798adaaa4822779ed61c8459087ba60c6740496411555096367c2d337fb1b",
    "signer": "0x67F945Cda01aC194c655b1cA35C1243133cF9e38",
    "userId": "882331001"
  }
}