{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882575",
    "entityType": "User",
    "nonce": "0xd38e40c204dc3c07c29213b3f54b4e828d1a5939275a12004dcb0c2736d973d8",
    "signature": "0x50b7c42ea3aa095feced3901f53e90bcc26e80b81083ac71651dddfcef1eec777af26e69c63648d2b0b57625a5d7681fb3b624f4a8d47f119d926917aa77e8431c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}