{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301373",
    "entityType": "User",
    "nonce": "0xfd54d41a06ca0ec49e484cab12bfff58275a7bf0b78a6f17ed5e4b5feb39ff0d",
    "signature": "0x863ec2d2f706dd9e39134d32a0948618c2a307e08e46d83c29a47d2666d1f78b758691bb50252f62bedaebc0539f593d0e5f8fef4f6379d3b1954ee1e9d3063b1b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}