{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb47fc63bf666881e09036ce99197064246230f934244bc3c6677f5363b07038",
    "signature": "0x7f90e04ea00ff87d1472ba093e49359571d8f6c0f92eedfe9147348438ae4d633ae024fae9fdae616175f67c52b58a7384b2d2479de604704323179e9d2f13b31c",
    "signer": "0xff4029d34F40f4154CD786c840C05Eab019f84f1",
    "userId": "429250954"
  }
}