{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x501ec27707458af6435533a081bb9b415afc19a8bec5a25ec729734d6b2b4723",
    "signature": "0xa8c4f548d9b8c9f6dd2fea84b59a0c414fe813ca32d078fe24a87845e74956381a6f3aae6d65a50662f1eb7a6a5ea502815a7c1a3b58cf511a3962bf46dc80b51c",
    "signer": "0x884490CFa947bC5C5d41834F53666866b78D19d6",
    "userId": "475900419"
  }
}