{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ffde203e0be189bb97abf1fca84ea1d7eb03f5b071abc566f0b31be2f1706dc",
    "signature": "0xe92fcb2915b71b2aa59f60b8187ac136a14324b0c92d07a7ad0ec4a0d6a512672b7cd23b8424525d35991be714c16225ec3a9822d436694809e484b3fff2723e1b",
    "signer": "0x6558Fe4eB1189670c9F0dd0f345B8C6367e99F8a",
    "userId": "60753674"
  }
}