{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781355398",
    "entityType": "User",
    "nonce": "0x10678cf88eddf85747a80be885deba7c5bc38338e2dcbcc9dbb34f769b1c2a6e",
    "signature": "0x670b4ae73bfe4400f2b5aa0fff7b6bb7daf47119190edbec22822ea9caa701bb30f681ea73b937379d0b9b4b67b6c32f34892477cccbcf39d50bd89a7906aa8f1c",
    "signer": "0x2578e08e63e9240DedbEB392Be8356ddDBA5Ebea",
    "userId": "782603281"
  }
}