{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16326",
    "entityType": "User",
    "nonce": "0xf12c2306419288b268d66e7c5dee78260adccc0f2560946e9ea36d4fb12b125c",
    "signature": "0x30bfa216eb993a1c59e104739cf10f2f1daa4b9f22b3bf4ec26502ea0c5654c32895d52d4cddedb88e9e8a992886d7b9900b0d8315f2270272f560d90a0ec23a1c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}