{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "316869",
    "entityType": "User",
    "nonce": "0x23af2f1d03aad77bbb08564b2c06a9f1c893e0264ca94bb16342a309fe605b85",
    "signature": "0x16b67bd1d5b82d14f659cc571c2b8b36618dd99a00520b15987b860b16c330b37c6ebbf2485596847a4de7cd861aa8203251408b623f7d3363697b5140ad25071b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}