{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645731",
    "entityType": "User",
    "nonce": "0xf48bdecb300c8ad8d40b2f07e3f8c0baf50626cd4abc4a69bf779147980c579d",
    "signature": "0x0816820dbb46afbf4529e8791e9ab9f9b79c25c39ae08e6c1e34cae59cebf866636dd549756d5459a059f2f389eda451814f5e721de30e995669af65512f16771c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}