{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c1c24f1d679645547ff3af322fcd7cd24eb229bdff6810635c8beadeeffd0a8",
    "signature": "0x3702b405812f723f6accf50eefc362ea0b86cc35e21b9a96584f6a5439af6cef1eefff33f06b7827f7def4d7c3422a1f03f0e2c5e2037f4f94d9fca308d95aba1c",
    "signer": "0x25ec36593ef5abE8663D916865ef8DD80BE4c1D2",
    "userId": "91562943"
  }
}