{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xe4ef3935d9d2203a9c09d5d93abdc472bfb2d28a2f168421417a3cc693852152",
    "signature": "0x30cce7459d70d9154dc303097b3c6bb70be76caca28eef81c00feb2490468e226ca6e4a0cec38275f0bea468277b10815e7d7d79bc073e5c3d95129222bb78481b",
    "signer": "0xFe4E972E3ec8D8d619816F5644f74CB5bA1B01b1",
    "userId": "219239808"
  }
}