{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174400",
    "entityType": "User",
    "nonce": "0x402351c3d3af2984ae319f7de844a6fdd1d1ca8ee9814e8ba379166e281db52a",
    "signature": "0x86e6777284aa321a56c1dddd57e2d98986507a0fcb47c8fb15883e4a8471c91b72d5baafed6e93fc3cb6cf4378a259551009413fdee5eb90f1cc657b1a7e26221b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}