{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x00b9c88dc31919fdd6c7df9b696986b58b5a0404cf7fa9c1316de2d458fa6f55",
    "signature": "0x2d3da5a3d210647aa641e52b0b7bee1f1bfe2d930be6042aeaeaada15e2e75b5757ea8c6b80abbf223da0f152aeb200e1b13e0a6ecd1b903b0cd951b59cdd12c1c",
    "signer": "0x2E09706d061Da2bB66d01F583c734E89CFCd23D1",
    "userId": "14811"
  }
}