{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xcd4548930e3350cdbe7926f822e715c393e0dc129553ab6cac2cc9165bedbf8d",
    "signature": "0xdf4868b681280373692934a50a629e0f702eb15146fc126bc8386efa7f5a3cb20d964696a590d627a70134c902e8121d5cc71777719b7b51995f758896fe79711c",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}