{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5f84d3a702938f740ff2060bda224702f74233d3178d7f9b9f4172a7c29eef9",
    "signature": "0xcf60797d39e6e319ae3fd4a546e70be45e1f33acafa6ce9f8b3eee6d01e09ffe7682dd841bbd930a6ca6ead090f664374635cbb36a434ee4519506831a6137bd1c",
    "signer": "0xb780c8Eb4a318C0865aF91b83785D89C75A49154",
    "userId": "765245438"
  }
}