{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197585",
    "entityType": "User",
    "nonce": "0x710e5909b3dd1cb6e19129523ab958546461c04562724406e1109a762f3ac02a",
    "signature": "0xfc1cabf42e1fb27eb325a6c18477c9654497c0289fd1b1b1be6f1d662d8d0e9f40575f9edb690466c53b338321d540bb04f1bc4bb04e66f7020605e3665eead51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}