{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x94f2190e7f299d08dcf585150a6b441cde6a85cb4d4f7645dd67d164c87cd4a9",
    "signature": "0xc4dd8dcd20d9393953318277ec01829e58ae9c68b4141aa101f213a99547bfb670e60f17b00f3c066463ad47624c37bfac41f6483747dac242554fe172ccf3e51c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}