{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74fc38fd192a444056ad3a06a4dfe2594e73fb3e407994408a6ab8505629e7ab",
    "signature": "0x9abb1f1e61d2e5b70c306367b7d618a850a770df5b3f8c23c98066c14f0890f47a38b9784393f5dda49170c63f73e2af48dbd1bc09b45a131bd32a1f70d3b1511b",
    "signer": "0xfE801C5b4e32F07b4238F0B697f7D389f2A8f928",
    "userId": "368206296"
  }
}