{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab1acb4e25a1a3896f13d87802644059241b45637874e3b62075816ac906a9ef",
    "signature": "0x30362ddf0e2795060f55c8358d06061d7047e2a0aa233901148c3bdd892e24b43501ae3a114b9e2c2b30d1319013160a6add38a86fb3706f1583066a5d24ded41c",
    "signer": "0x4a80F69ea9EF9BD9837b8dDDa9b357F25Df59CF5",
    "userId": "665201749"
  }
}