{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xdf48380f98bd81813b7b1695b91e37faa88d62db4f63a9398e3af127bd283bf0",
    "signature": "0xa2eac2f20b3967fbb8b2725159db4ff951dad2f0a0d4156bf2b2488e8e4c4c277c6a7e9f0b2f70443eb830179f726f26ce19b42100b784f8f326f2c379c752df1c",
    "signer": "0xeFC9B78A20535768B9d5BCd2702b853bd5C0789c",
    "userId": "333246"
  }
}