{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0xb5ee685d82a0028a6f54bb5a176d8884d54252976f3913c793a855481a451079",
    "signature": "0x7baaf2d2fc790c65b7d1910e52833aff544d09e458a0bca1071dc7f06714f57e1b1f9a3bccf0db8e42f7c33e1b269335338b8ab1076d52e731ca3a5dd942928c1c",
    "signer": "0x715A5d320e133F509f3675872cbF21D8B0e129d5",
    "userId": "396577"
  }
}