{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31a44f9c62f1b8953803a91bbb67491ec321452c956a7cee491c3f6eb4485eca",
    "signature": "0x6f6145e15053c03f9f57aec30e97ae3b93623a2f08b42d265260575a10a916490d60d989e8a80bb054fbc6ddc320d8d532e910699a72097c78c3831d5fe40f9b1c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}