{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0x3a532f20c24c18ae239f313ef1db680b0f4139700a07e8d42d3b7259ccc6e1a8",
    "signature": "0xf40778f566f6f6e843ee73718d3c61c7a04194f9715ff98ff0e2c2aae254687f7f8064481948e56bd28b3f9e1778da5e0a5f1bb8ff8a4237bd4c975fadd4bebf1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}