{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "60753512",
    "entityType": "User",
    "nonce": "0x1ccf0b616c1de3eaeb0474378e215f71e961707b051e1a542a1cf9e884be774d",
    "signature": "0x24463c873cdf93183ca217910ed038641daa287aa77ff8c65ff8aae70f0a3ce04b4d5c8aecb2e88d521ad0b2d93fd52fbb47043ef3f8087ae28e57c807c75a2b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}