{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200959284",
    "entityType": "User",
    "nonce": "0x875248b6811f7e5717c1e7a2ab79f6fe891fe0b352eb71c7e6b01fc596281c9e",
    "signature": "0xc102515af90267150c63457d5d8f5a1e4b95ae362490cc88f807102d226d9fbd20769f4c7e345fac570da0e69f5abbf8ea0daf24ed99344a647d4102c50ddd2e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}