{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121616299",
    "entityType": "User",
    "nonce": "0xbf69989370b1ac6cfc431d2126a084512760c4d049b45f598305f39cab108589",
    "signature": "0xb26445c377a881d8ead75679a46fe38db459602ded44d471862393abd5facfdf29bd6c13f03021af0ffcc96bebda772c428ccfd3d6144bb678f6fd4f5e2829a41b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}