{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7469",
    "entityType": "User",
    "nonce": "0x520b503fa0f8d07e9deb3e1f4b5e81a95feadad4175d0d4dec08cdec54310d82",
    "signature": "0x8d6452de16a5972fc7eb14e30d433197bd023a88a9ab4861ae8edba4a02dbb9a6db4c3425979d9514619cf76db98200e98120f8e21a2d3acb37c6ff5af9b9a651c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}