{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xd69e33c1facbd88fe26c1fcc033d17dd5b89860543abdd46a143deb73b82efa4",
    "signature": "0x0c5a2ff8678b3053cc690a7f3b0c067528b03d28715a84c814888410ef2a464b4ffbb24300bf0913753c0ba9765d1fddd374d29e5e6fa50c0273d636f797cb3d1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}