{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd595c31c30f9e87ed257b4b33ef3a9da5792336d4dccc936c05135d29bdb5f31",
    "signature": "0xa522a55300409b2a72259ec98c03667bec99c6ba1c5a5c17d9b8531d3093b1262e33a8f750fa87d2fa80488339fece2d92f6a371ea77718a6da8cdbde657d7531c",
    "signer": "0x9Df3B620Ace778C8855C5a5C91CCa48A9b483056",
    "userId": "405518361"
  }
}