{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0x3f85fe2852b79f79d32aee74bb9064fde73646c1fac8a637d3ed950db29d6c3d",
    "signature": "0xfa5197b1a082b3ff22670b8906a5b0ec2ac0da43a5b8e10c3d70cf3ad059a0847b2ecb7cdfc08116fa57a96528af1dad31a0366dbf253d3ceadccaaebe2601ad1b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}