{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x272f6d01bf47b613aa0f0efdf37fbb9982c198ad51b4b70c274289e2cd9676b8",
    "signature": "0x173968edc05bb9db9f9f82d94b8bea384f1294f8597a02c008561fd31a8af0066bf101d2e89b5186f7a9f67b28d11953d369ce92cee8a35bda44b6dc2df4062c1c",
    "signer": "0x369dD45047998ccCC8699316C910B0D73eDf8A6D",
    "userId": "520723855"
  }
}