{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "712556959",
    "entityType": "User",
    "nonce": "0xe9ace057e8358251e53edb95859833f66c2e415de226a1942246aaadc2de1539",
    "signature": "0xb4cee26d3e2970a2e7eb82784fdfdb72ee5fe5bdc0df68a4fbf3c8d329ccb0b0038ee0294e089c39866c2208f3edb11a9c616021b343358d8bdb1eeceb57e2551c",
    "signer": "0x69F109EC41448B316AeBBD9F0b2B445c09552bF8",
    "userId": "184573"
  }
}