{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5f16212a0346bddc213352a67a4dd331deafec7b5e5f90af3ba2f3f255885f4",
    "signature": "0x4346b9f72e34706e574b518ab20bd6c5811f3d9260525ef0d3f5a1bd151898216ac0f94f1f894bcdc9e9b302b41d6b27f0e95985124ef7308bb2bb60c75e15eb1c",
    "signer": "0x13c7b96e121a63c71cb2eE602EB49657F68c22c1",
    "userId": "374868101"
  }
}