{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "549950943",
    "entityType": "User",
    "nonce": "0xde791d0d093d1ea22f8d296e17bf40dd8bfa457bdb52264e71020181cbdfb276",
    "signature": "0x7855834c3e36748ed80608242d4a6c82b7f055a2e739d15d8e4a21675ccda4ea4c6e63acc6e3ea0b044b3a6b3944a0b813934875be515e6e757271c3953e97f91c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}