{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "676310",
    "entityType": "User",
    "nonce": "0x3c57baafcc2beb327eb60656e5d5ef6772ed208cde9101b4e84f2e989952752f",
    "signature": "0x0773ba9618b18f0a59432ad1a7a3235b27a0d5eeb40f1279b33431d7d3869af335c37e922b63cb4ffbc4ae0ff95fd3284b6c74d5fd74a3f43c649851d9496a9c1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}