{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50646",
    "entityType": "User",
    "nonce": "0x6d1e07dab117cde3b47d086f8b31448d96fa3843e5b05cfefa0cb03b7fcf855b",
    "signature": "0x75d7c7431b7db5fd2ffce9ea6436bc6e9a8f3a4dc8951537d5f87fbd6b2f089d53f9d843c4ebfe3d041e3e38abd761fa492b840fce54ae89c67efbaabc78e32f1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}