{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ae19be9f3569535e3a6727e9893e1a3795a9cfd17c9ca96e76f026444c7fd0b",
    "signature": "0x9fe364d9f3d578940ab5239e207924e1a774a00b93000b85335bb47677f94dfa5a66ae55201f27c90280573a51ecba9a94ae4df5037763a4f7822ce640cb7b971c",
    "signer": "0x250408DFA1F25f7116646f8C4128De4f4A543715",
    "userId": "588313052"
  }
}