{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536142847",
    "entityType": "User",
    "nonce": "0x5ba69dab81566f8d17c1c8d0aa33a6c42f75f1542e1157009fd75d6e88963079",
    "signature": "0x628331445d49147f0eb4a88b63fa2741a9c22e9ab8bab6345949f3c7aed37e6257969a613d0c257f42c29fd3b7419f0c193e0c35f5a15a0d76659cb3e1fe81b71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}