{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5fd3a936e5331a71094d943af6581e743aaa63313bceb03d670c17f760e90c65",
    "signature": "0xe5186bcf2a15ca0458a6fe1abaadba2006d7fc4194ce0c5f8bc71cf4a1f64b2b441bb5e165df7cde25d7b70793d54732c6acb8c41524f3f4715cd0d6cf7b4a0e1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}