{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a6e1cf4ec7b752dc36db7c2bcf2a4b5e7e5451c1db88e8c83248c9b6aa90668",
    "signature": "0x8f6eaef46ef4c727ca2920288d222ee8f8833858a3d8dfdbeb8c3209f2f0f05d47e6f19df67785b6dd07339eb804fb40b63f42333c2a1a5b2bf51a8f2586ab181b",
    "signer": "0xc57E470658C3363bd7Bd31df5CA442b5fBf863Ed",
    "userId": "553864335"
  }
}