{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b546bf44d7af47a4b17a1ffaf79998e4a4f5425687a59fb87d656bc24583a31",
    "signature": "0x59bcae3d8893f662090ce1640a3a0b6e77f2b8682574a2fad17bf6d983540d526e77bb4cb09c928da55af7c93063a07926e35174c6a4fe6ef4e0e344ecb299171c",
    "signer": "0xc0F879314c258a25a97b83fa1A16c1Ecb6700328",
    "userId": "567655435"
  }
}