{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x592d33e1eaf9d238e0ba41e584d4e685f4dd7058a51321de8f83dd61b5de813f",
    "signature": "0xc37b44304b0fdb21b2fd1ec956145f5fcb05ca74448574207d2d518c2fd01179003e40b25ae4a376b1b0349576d0682aead1403dbbc7df5fa222978af67c66681c",
    "signer": "0xbB4c191a7601C9158D145429F07D794bc7478569",
    "userId": "731704246"
  }
}