{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20671471",
    "entityType": "User",
    "nonce": "0x2cec22237b96aaae089cba9bd960eb67e4d4f0bd555b6db17b70908b26b0bc6c",
    "signature": "0x86b0ad5885e917c3d331f8fdc011bd7cc311a158c4a677665ff1add667d3e3d379c9675feb6009aaa2935c4b99a550c99086d465f448e61a95d0bb1534d93a781c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}