{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf45d96e23cfac73750f4b93bfc20497bcc2fa47ae42d80393541348e33e5e5c",
    "signature": "0xd0a879c3c357aaa2baa8347acff54300ad4d2cca688bde9b5ab9152f4c983e99518dc9ceb24d3a93543bbf98fa1d90aa0cc740060e54ae3d34b9789888406fae1c",
    "signer": "0x54D6Ed50121eA9D17fD50e2C201193e91921e731",
    "userId": "35719062"
  }
}