{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x967ae75fb6b2690008403423aac3f37bdd250a833e4955eef120cbe5c22e8c7c",
    "signature": "0x31cb42286729ed1e9e793edfae23a49397d389e6b9b3a58a388d8071a2179f3e08be3d205f4b67b0762171d78a1b36d2fd5fc5153409d2cf99abde412de197ff1b",
    "signer": "0x648641b8343AC9819Ae81C3f57D5364689163C83",
    "userId": "64916143"
  }
}