{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x26820e1d1df26213c96d0420133c37ac0a77920756dae6b16cc498af570c11ff",
    "signature": "0x6544a5ab5f914f935b8cd8a74b971422e68f9ababe81c973bd248d5d97d8829837c5c5df397ea7d7472d240ab2f1d8ce1960fdf240281f7b813ea29ea201dc591b",
    "signer": "0xf43ef72818c171b0d5206E56D3F298e97EbaC5A1",
    "userId": "876052617"
  }
}