{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfaa83ae7a384c709fcec52305bb36958b7ec8940e589a73e0b332de41a26be63",
    "signature": "0x3d92801895106d21ea1b02c324292886dc96c43fd47c74249558247e4b49844a4addac9fecdce52d628b04ad4b28e7a452955fbbfa85edeefdb730075ee2b2761c",
    "signer": "0xE73f883Db3421168B410336C936E58fECf86cfA6",
    "userId": "791201705"
  }
}