{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf2b21181b6295b12413984589c35f5e3bd51cda5e42eec1e25f1774ca71d507e",
    "signature": "0x7e3e45c339c2f1b7d7e4e01e0ff0f22fa51e3a0947ea5cf23e898263e3630aed451ba8ad72f36ca9709b9c45fadc7434e2f43704436994383b35b0d3486a6e0e1c",
    "signer": "0x62f906d68090909D66ab5e3DD307a6430C6BB168",
    "userId": "541500051"
  }
}