{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2619",
    "entityType": "User",
    "nonce": "0x74621c9f63956a4b54fb62e7792483c90c5ee48a04e05e832629aea98a356482",
    "signature": "0x278069761681965771fd13f318d7dfe46ef501bd3068af91e315135fb1559a683d2167cf9c50805ece53553ee53b2db58a46dd143c533cbffd2228fa1dccf9a81c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}