{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142483",
    "entityType": "User",
    "nonce": "0x4f2cdc8e73a505072b327c2eb26e61c8d1cdf3b3d7785c651210cebbe997a8ab",
    "signature": "0xdfad0cd62f8165794391625fc31ae9453be5eeb948ce77832c729b204e23e1f94d997e6524279efcce84ff7ed0b11ee70382ea29757969240729172c04699f5b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}