{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870665506",
    "entityType": "User",
    "nonce": "0x0e576b095cbe49d8cae464b191100b2a085af6793e51645104164d67db8a7a85",
    "signature": "0xc042a8191683a952d2bf31754f21f7c145e6362bce1e48783f74398259f469ae633ec2771d7477102c85a5d907cc9a1627c607c02b9b91195cb862984d70ff2d1b",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}