{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xa254bced4f3d30d0f04bc8c7fc903bd515a35356a15168db51b973af16359b54",
    "signature": "0x35d3994e95fdbd26d903c2cc56bb28726fc67e134e32d853bedae9f98f5f138e27d1f9cf1f9021137038859d53976dfe923160ca0fa32a48504d0097c4ba53891b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}