{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144284869",
    "entityType": "User",
    "nonce": "0x75a21a317d4860ee6650784c2c9614d37077fbb233de257e59f27653d50124da",
    "signature": "0xa1bf7ae6e5e6b49c0fc04de2737528489db4644ff74e6f4f5913332ca515568203cc34a50cdbfc231349ce563506cf701b38e32aac80c8aef2d1faab1c2536841b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}