{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632918751",
    "entityType": "User",
    "nonce": "0x1867e6ba82376c24cae55a54f63428ad9f8733fa546e717a6549e00c76a0e4b7",
    "signature": "0x43e750655e85a30c000fac0bfce22242dac2442d63b6bded20172e2a47c4de251fea91a806e108cc5d67d1a2de65b967efb9ef3d54b6ffdb4c1a8f9bccdec7641b",
    "signer": "0x812890A6DBee34A114713AB8a5D839CDB1c20363",
    "userId": "354441"
  }
}