{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x6efd0259e06a1545bc5185cdf20679bb53d57667fd8d60300847819e8cb05bd5",
    "signature": "0x5dc59a97ab4b0217db2ee70c3f19cdf83659073614044853631e0e8dc1c2d4c0139a40a0cd969e9e126cffb759c5abd0df9a2bee88dc3427e063a2bb28ddaf261b",
    "signer": "0x6FFe1439635739f39c45fcfBB06829c5E9D8e5aC",
    "userId": "792741418"
  }
}