{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904405512",
    "entityType": "User",
    "nonce": "0x89093e8f2587d6d8cda6d397a328bdf75607defa27edd060d3892f216c597ddc",
    "signature": "0xfd233574a0c82517cbe59578a4579617824bb214997f3a56692e83858fd82f226870e25a7b12481153e0b0994af5dacc2d5ccef890101b6dfde24a4aa870f84b1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}