{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x507e52e179e5b1a60a40f903e144e7eb3bee515d6c96ce4986a28cc0c8a78c6f",
    "signature": "0x10ab424afc95c4f8bac53bfbe702427067e8e2a44c1cdf1a66c9da5484f44ec5635c16f156e45d5b07446642df0e8f0bf151efde21926f0a325c7062ec8272781c",
    "signer": "0xc925e3D5c81807Eb402BaF80F986fc737F7EfB5c",
    "userId": "230578654"
  }
}