{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xa3405c3ee330a624b552dadd56bd03b794bfa8a8eb3df81f2d44576c65de083f",
    "signature": "0x7c2ee0ba53b6ef62f6630f0a16865d65b01c8aef048a0e8ce72d21a876e967d07975519a3558506f8bf23b3c8c8e58aa455f9724a595cfd9f79c36ac51e8afc91b",
    "signer": "0x812890A6DBee34A114713AB8a5D839CDB1c20363",
    "userId": "354441"
  }
}