{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xe4e7959e348b1da1e279c2acca6e24539fe7df8197bd0bc75d2c1232cdb071cb",
    "signature": "0x889c3efe97bfc766003416fad551201d3b1f1a3453a74ecb637a94aceb4d29023df98f24c5fd42272f4de80d636994e7c9b23b1d076adc40d496e8c1a6a16f981b",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}