{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0x5e661ad2896064319d65dfe04b4f0042137d65428d591b9f3f44dfcee911311c",
    "signature": "0xc9fc91f7f0f7c02acbf71ed5f225afb576e09dd17a76b7f592c08c44f381c72b6da8c4d6e4d7640144ac5fe6bf2af9c0a454813ffa890935434a5321b86ff1e71b",
    "signer": "0xF83f8804040D884fCBAcD57d4Dbeaa764176F931",
    "userId": "455502808"
  }
}