{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28913edef524025c0936e829af403261aab3750d13935521d5633e953d9382f8",
    "signature": "0x73663321615d9c682c0402180c1801e3f4d3944ffeeb9729d8325e71685b35801e28410547071522bde79f623fce409cc949543949d5c82778a9d3e11e1a84421c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}