{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153194",
    "entityType": "User",
    "nonce": "0x4d049b0f15f5d311647e8f737831c73f21cc18d9cdd814ada8615e71a5c31c73",
    "signature": "0xc44d39553273ba33a5899c23b3599ca4d731f7485b8d0ce2cb59e19ade47ba1d129c5ffa02d30ab2a80c0f62de69da538673ae70fae7e3434866e0cbff30d4f11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}