{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1415185",
    "entityType": "User",
    "nonce": "0x3c581a29470e70aa661f2c1e0c2365f28211252412f0236775f5384cfbb8e900",
    "signature": "0xde50199ccb5c6d0a505642ad7c59fc293423a2e991d95677a888e84d898b045739a8f0cb8dcbf4d3f6f0a7bc1b7114b37b46c47cc24b42173a5438d83a736e261c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}