{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfd5a99e9f524dd5d16cf0c7f28f99346c32363b7cc536cdf301dcb3b8c48a466",
    "signature": "0xf6cd02d8c6d340108a7b7c2b9bc6e189aa115600c934c20f5d296a73f223a09b5c5aa05848d67b618c9bf622425572220e466beb47a0e2e23cf3215b15addcc51c",
    "signer": "0x3639caC03eDAc05E4869C472a6A05AfBd46e7838",
    "userId": "738927631"
  }
}