{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x4c218c1b598fe663726b0b70fa456cbcbd2776c6fcf0053950a06490fa1e2597",
    "signature": "0x8970c91c03073df4e97001ee6fb57f67519c3558df0fb50e18426e79d39862897f30520eaa28ead72cba71ed4a0331051ed972d7f66ecb84a8d4dd940577dbac1c",
    "signer": "0xFFa47Ef31b52CcEEA1CE9d5e20cbc9f8D59b6915",
    "userId": "655264080"
  }
}