{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3390d33aed127c2ad7acbd7ad585eb221bc707fa8ffae5fccdc8ec6406c541ed",
    "signature": "0x65c0915a21f9cdff279f74857d2f4b840e45c7615404e0a8142c883ecbbe27dc3c540e2d626b99955e42c4d0bc8bb75acd859443b42373445d1a6aa72fe9cd4d1c",
    "signer": "0xbA8BcCF997a1902C47a17A08641B44FDe485B55B",
    "userId": "328003355"
  }
}