{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc807bf19b3c25d53d0e25d548bcf0dc7abadf83a006b415d034298dd9406f408",
    "signature": "0x46d6c347644b6f11cacb6d742cc4aebd71be2b511424d58bd5e31f97e32e92af2e9b6ca7147f1aca59844b834b391bfb6d24236780dbef22f5994a3e105f0c8c1c",
    "signer": "0x5d2d8A87AB5CB4cD8D512501E4A53cE157a9049B",
    "userId": "936628708"
  }
}