{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd87be536f3f9d5bd063bd67e1ec4b0165f24f89d3de8cfaaa388a8eb1c389850",
    "signature": "0x87732a2c7ca8d6af6c5fe0b6ca89476f31dd2ea09a0bd154284baa2b491a984f551d1d09ab662137c3924b797cbbe8c6c5275035f0f0f4334ae42e31cc71795c1c",
    "signer": "0xfeBEE04516164483CF01D007eB79f7c798FE6244",
    "userId": "908487411"
  }
}