{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9632962fb45b64748d9f3f50715e174bcc158d0cd558fa88eb62d3801cd971d8",
    "signature": "0xd6dafd50738b44c36538972cb57a3bcfa17ed609f590a5663ecd9f62aabda96e2c35e9b2d0941f1adb74e14a0219d3a5c0d482d1ba5fd1af19fe93f18af1e1141c",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}