{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0xc89f8dfee4932e9f43cf55c10209426ebce51811c4b2fc2176e8f3714dc24233",
    "signature": "0xedb3bb6d78139928ab01b913cec47d27e402e3f98faf354205390c62585df5712c9eed2e204be171353358eaebd2519087571ab84104c9b66eed5bde4e5515341c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}