{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xa591936609ff454c1779a37d1c452b396e85595bbf22e54bf569945e8aa58893",
    "signature": "0x4422ac2c8e84379d10a4124de98b512650c24625a26d3f35e59abbb0f04155c53be557028116bdcd47f0a0c5bd0766defbf5c37e6421cd1a96fcbf19386da6521b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}