{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964899801",
    "entityType": "User",
    "nonce": "0x7c66333c02bfa5fa904ce3774051cd5fba5ec384e0424d27974f134c848ecd2c",
    "signature": "0xbd7b82a3ae7a37bf50b1352daab0c0d0d4fb22ae3ca161dccba364b374fbcfdd436af22cd5c04765c5a2cf28ab147ec12e41ac050f68c32ae7c627ca1b4339981b",
    "signer": "0x3D472a01Cb831ac594835ac6038A4346E2A22B94",
    "userId": "327343"
  }
}