{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xa8f9d347f8ff5948674a87b80e184f6b30d2635ddcc5f15b9923d783e65d9fd1",
    "signature": "0xc8ac5b6b194e19e77d877211575bfbb3a6048d0fb07c8b14bd0cc5f3d5692eab21dab808ea57a0010a6621fa3c850b10f382694ce1dbb949b806f74799b19f481c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}