{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18953",
    "entityType": "User",
    "nonce": "0xd23d9e87bc1590485b8adafb0a7ebcbca673aa760b2d30782cdd67b5ae4151f0",
    "signature": "0x60a54513f8fbbfc4078cc002b18defd64b0c4729a2064f998ebacbf70294e2f203fd0d18f133d703ad33ee0093e361f5bda9b4af3345088cb94e476205f021cd1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}