{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb6b5d6dde1ad0532f76cdade0ea8897125386fa3374d35c76796bbacfecab79a",
    "signature": "0x16136b8c6059784bafaff664a3967b8e5c6476a4cd460635ae60a6b4f3ab32703b2d07bf8310775c81479bb49838a2824132a41db6bce039a3bb47798342619e1c",
    "signer": "0x2d956609Cbe7D7e504Bd6319d4abC4E35de2dcF3",
    "userId": "663406710"
  }
}