{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0xa4591382a4d7f8b3d244888b31c06925f34ee06ffc8c92ce8e265ec9cf069647",
    "signature": "0x68c6f6a799019463ed8af1aed9f514ac103d26f62a8c789615b35b0da01fadad1d23fb1f3388bf3731a253c474d0c7c9501a51b46dcc3f0ef2d61a1ffe2b87e51b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}