{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308761871",
    "entityType": "User",
    "nonce": "0x7781ba71473b944044ce2d87b635ac42a187c5c889abd728fb504b0642ef606e",
    "signature": "0x3b0c12ac2060a5f7b706507655870e3a4e8e87053e4655747da123a2a9a631441a0903916f07941e4098371e62e4b50f40405085dc4f98302720147258f309fe1b",
    "signer": "0xe58F2D8128273F34a65a7d2cA9D026e70185D1AF",
    "userId": "391333792"
  }
}