{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9d3d6a638d9360f3565c38971e4e359e417a7e0448499f4291b98b97d40f3ac7",
    "signature": "0x83f203a7dba0b2dacd53bcc10cf443f86e7dc771896c776707cda7ae8427b3df3815fb486755ff1d19aeaf096bf3d611504c1e2a111fec2a56b663140d68b6581b",
    "signer": "0x67f0DD24C108EB5Da1Bb212489834f2f6912C5B7",
    "userId": "512888028"
  }
}