{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641066050",
    "entityType": "User",
    "nonce": "0x328726238f48ca14ccccd577e76600be25520e9620d8da1a0183f701a3b77520",
    "signature": "0x21a3ef5ea917100fae234e4e698dfb3da0cf0b0ba0d0112b4ce427ad7d46db2963e6ccb6e9a8e007157a72f820486a26002e11c82273584049ea8990e4c7218c1c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}