{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101876",
    "entityType": "User",
    "nonce": "0x2d5125cfa09aec0901d46769949a07269b5bca3c657d2a9e3f6aceba10dcc7ec",
    "signature": "0x7b3f23f3b435e9ff70fcd63545d79eb726545fcf3465f9e233d91d9c0d2f1b80099b94cd3fc35f362e1ccddb8950a31f2c91678e43f53eb436c927e23a05d0c51b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}