{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748910",
    "entityType": "User",
    "nonce": "0xad88ea5d93f04d71f59d08aecb9d7b35b1f09cb4b453bd75af3dd530efd80d4d",
    "signature": "0x99d8e4cfb67d1ddd48695c4a65aa373a766605eabd55817bab434de10240208d05c332278c4a73f6565b7a45ade6672b51e492ab186377c2805079c5d9fc1a901b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}