{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345811967",
    "entityType": "User",
    "nonce": "0xb56282a92ce9c75ee177683c7365b63524c833c3fead517701b9de2f329515f8",
    "signature": "0xac3dfb9ce12a54f861906a01dd0053284b461ddc6be4021bbf620cd14fe8f13f7b1c38deff2cb05cb8bac29c178a348b2caa280c963ab7c656b94a4693e6fded1b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}