{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x78fae91032ed1c6db85869e2e2e6a18796215125b68a304f02ef889314adc46a",
    "signature": "0xbd47a2b94012ea356adfbb301aa60f2d1680d5c538c27b9c6dbfbd85f182af3a54b94c430c2dd88df637fe641171fb6ec3407af102038749025fb4067f6ee2321b",
    "signer": "0x9D0493548DA5A09464F488E2421c2d531019A38f",
    "userId": "312392945"
  }
}