{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "38771",
    "entityType": "User",
    "nonce": "0x180c01c2bfccfae2ae8572169db3ca6b6af999e15dc76dd42006d4c48bee548d",
    "signature": "0xddbad50d05e5f0a001209b61fce563d5daeca6635c818ff52c93e8aea9fc8c0f7af0b8f6cbb68a37cb847f1aa1aa5c27424aa2506beca218c9deb7a076bf08ec1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}